22335661 has 2 divisors, whose sum is σ = 22335662. Its totient is φ = 22335660.

The previous prime is 22335647. The next prime is 22335667. The reversal of 22335661 is 16653322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 189225 = 4706^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 22335661 - 2⁵ = 22335629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22335667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11167830 + 11167831.

It is an arithmetic number, because the mean of its divisors is an integer number (11167831).

Almost surely, 2^22335661 is an apocalyptic number.

It is an amenable number.

22335661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22335661 is an equidigital number, since it uses as much as digits as its factorization.

22335661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 22335661 is about 4726.0618912579. The cubic root of 22335661 is about 281.6217999020.

Adding to 22335661 its reverse (16653322), we get a palindrome (38988983).

The spelling of 22335661 in words is "twenty-two million, three hundred thirty-five thousand, six hundred sixty-one".